Submission #1213756

#	Time	Username	Problem	Language	Result	Execution time	Memory
1213756		mychecksedad	Financial Report (JOI21_financial)	C++17	5 / 100	271 ms	11028 KiB

Main

/* Author : Mychecksdead  */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
#define ff first
#define ss second
#define pii pair<int,int>
#define vi vector<int>
const int N = 2e6+100, M = 1e5+10, K = 52, MX = 30;


int n, d, a[N], T[N], S[N];
void build(int l, int r, int k){
  if(l == r){
    T[k] = 0;
    S[k] = MOD;
    return;
  }
  int mid = l+r>>1;
  build(l, mid, k<<1);
  build(mid+1, r, k<<1|1);
  T[k] = -MOD;
  S[k] = MOD;
}

void upd(int l, int r, int p, int k, int val, int idx){
  if(l == r){
    if(val == 0) T[k] = val;
    else T[k] = max(T[k], val);
    S[k] = idx;
    return;
  }
  int mid = l+r>>1;
  if(p <= mid) upd(l, mid, p, k<<1, val, idx);
  else upd(mid+1, r, p, k<<1|1, val, idx);
  T[k] = max(T[k<<1], T[k<<1|1]);
  S[k] = min(S[k<<1], S[k<<1|1]);
}

int get_min(int l, int r, int k, int lim){
  if(l == r){
    return l;
  }
  int mid = l+r>>1;
  if(S[k<<1] < lim){
    return get_min(l, mid, k<<1, lim);
  }
  return get_min(mid + 1, r, k<<1|1, lim);
}

int get(int l, int r, int ql, int qr, int k){
  if(ql > r || l > qr) return 0;
  if(ql <= l && r <= qr) return T[k];
  int mid = l+r>>1;
  return max(get(l, mid, ql, qr, k<<1), get(mid+1, r, ql, qr, k<<1|1));
}

void solve(){
  cin >> n >> d;
  vi val;
  for(int i = 1; i <= n; ++i){
    cin >> a[i];
    val.pb(a[i]);
  }

  sort(all(val));
  val.erase(unique(all(val)), val.end());
  for(int i = 1; i <= n; ++i){
    a[i] = lower_bound(all(val), a[i]) - val.begin() + 1;
  }

  build(1, n, 1);
  for(int i = 1; i <= n; ++i){
    int lim = i - d;
    while(S[1] < lim){
      int pos = get_min(1, n, 1, lim);
      upd(1, n, pos, 1, 0, MOD);
    }
    int mx = max(1, get(1, n, 1, a[i] - 1, 1) + 1);
    upd(1, n, a[i], 1, mx, i);
  }
  cout << T[1];
}


int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tt = 1, aa;
  // freopen("in.txt", "r", stdin);
  // freopen("out.txt", "w", stdout);
  while(tt--){
    solve();
    en;
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
  return 0;
} 

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 20
• Subtask 4: 0 / 12
• Subtask 5: 5 / 5
• Subtask 6: 0 / 35